Journal-bearing



(No Model.)

D. J. DAVIS. JOURNAL BEARING.

No. 526,()26 Patented SepAt. 18. 1894.

DANIEL J. DAVIS, OF CHICAGO, ILLINOIS.

JOURNAL-BEARING.

SPECIFICATION forming part of Letters PatentNo. 526,026, dated September18, 1894.

Application filed February 1,1893. Serial No. 4601590- (No model.)

.To @ZZ whom it may concern,.-

Be it known that I, DANIEL J. DAVIS, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Journal-Bearings, ofwhich the following is a full, clear, and exact description, which willenable others to make and use the same, reference being had to theaccompanying drawings, forming a part of this speciication.

This invention relates to improvements in journal boxes or bearings, andhas for its object to provide a iiexible bearing that is more especiallyintended for use in connection with centrifugal separating machines.

In the drawingsz-Figure l is a brokenaway vertical section; Fig. 2, alongitudinal section of a bearingsleeve, and Fig. 3 a broken-away planof a journalcap. p

A represents a sectional broken-away top part of a pedestal or frame,supporting the Working mechanism of a centrifugal separator. This toppart of the frame is provided centrally with an opening a, surrounded byan annular bearing-neck A', screw threaded exteriorly as at a', andforming a part of the journal bearing or box.

The journal-cap B (Figs. 1 and 3) is screwthreaded interiorly, as at a2,and engages with the correspondingly threaded neck A. This journal-capis provided centrally with an opening o3, through which thebearing-sleeve C is inserted, the respective ends terminating above andbelow the journal-bearing, as shown in Fig. 1. The lower end of thissleeve is provided with an oil-cup a4, and the upper end with theinverted cup or detlecting surface a5, having the spherical surface a,The sleeve C is provided with the bearing-collar or shoulder b havingthe annular groove b. The adjacent surface of the neck A is alsoprovided with a recess or groove b2. The elastic, flexible bearing-ringD fits into these grooves; the concave surface h3 of the journal-capalso bearing against a part of the surface thereof. The ring D may becomposed of rubber or other suitable material. Ordinarily the journal-cap B was secured in place by a number of tap-bolts arranged atintervals and inserted through the flangepart d thereof. This wasobjectionable for thev reason that it was impossible, in setting up thebearing, to adjust the screws alike, and the result was that thedriving-spindle would be inclined a little from a true verticalposition. The speed at which the spindle is driven-usually from six toeight thousand revolutionsmakes it necessary that the bearing be soconstructed as to permit of a nice adjustment, and the spindlemaintainedin a true vertical position. By the arrangement shown, thejournal-cap has a continuous and uniform pressure on all sides alike andis always set evenly so that the bearing is adj usted to a nicety.

The annular space between the bearingsleeve and the adjacent surroundingsurface, provides for a little play of these parts so that thedriving-spindle will always assume acentral, vertical position.

The sleeve C is provided interiorly with a continuous spiral groove b4,running from end to end, and incloses the vertical spindle or shaftEbroken away at both ends. The separater-bowl (not shown) is looselymounted on the upper end, and the lower end seated in the usualstep-box, forming the lower journal-bearing. The journal-box shown formsthe upper bearing for the separator spindle.

An oil-reservoir F is located just outside of the vertical part of theframe and has an oilpipe g leading therefrom and discharging into theoil-cup 01.4 formed on the lower end of the bearing-sleeve. Thelubricant reaches the interior of the sleeve C through one or moreapertures g and following the spiral groove insures a continuouslubrication of the driving-spindle.

The waste oil, working out at the upper end of the bearing-sleeve,passes to the spherical surface of the inverted cup and drops into theannular channel g2, formed in the upper side of the journal-cap, andescapes through apertures g3 therein to the annular channel hin theupper side of the frame and is finally carried off through drip-pipeh.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. In a journal-bearing, a sleeve provided on its exterior withanannularly grooved collar and at its lower end with an oil-cup, and inits interior with a continuous spiral groove IOO ' and openings leadingfrom the oil-cup into the sleeve, in combination with a framesurrounding the lower portion of the collar and having an exteriorlythreaded bearing-neck, a journal-cap screwed onto the said neck, and ayielding bearing-ring interposed between the said collar frame, andjournal cap, substantially as described.

2. In a journal-bearing, a sleeve provided on its exterior andintermediate its ends with an annularly grooved collar, and at its upperend with a defiecting surface and at its lower end with an oil cup, andin its interior with a continuous spiral groove and openings leadingfrom the oil cup into the sleeve, in combination with a framesurrounding the lower portion of the collar and DANIEL J. DAVIS.

Witnesses:

L. M. FREEMAN, L. B. COUPLAND.

